Half to emanuel stein



(No Model.)

T. GORDQN.

GAS COCK.

No. 318,978. Patented June 2, 1885.

WITNESSES: INVENTOR N. PETEREL Pnewu m her. Waahinglon. u c.

lhvrrhn Stains arena? Oriana,

THOMAS GORDON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE HALF TOEMANUEL STEIN, OF SAME PLACE.

GAS-COCK.

SPEOIPICATION forming part of Letters Patent No. 318,978, dated June2,1885.

Application filed April 28, 1884. (No model.)

To all whom it may concern: is made conical to fit more accurately thecor- Be it known that I, THOMAS GORDON, of responding-shaped base of therecess, so that the city of Philadelphia, in the State of Penuinpractice when the plug would, by being sylvania, have invented a certainnew and useturned, otherwise shut off the flow of gas, the 5 fulImprovement in Gas-Cocks, of which the central core may be movedbackward or forfollowing is a specification. ward to admit a more orless greater flow of My invention relates to devices for regu gasthroughthecross-drilled recessintheplug, lating the flow of gas through a pipe;and it and thus regulate the same to a nicety. consists in substitutinga solid plug recessed I am aware that it is not new to construct 6o onits external surface and bored out in the a gas-cock with a hollow pluggrooved cirdirection of its length to the depth of such recumfercntiallyand a central screw working cess to admit of the insertion of a centralcore in the hollowed-out portion of the cock, so instead of a hollowplug, and of combining as to serve as a double gas-valve to dividetherewith a central core moving longitudithe supply and lead it to twojets or tubes 1 nally by screw-thread, or otherwise coveringsimultaneously, this having been patented to or uncovering, as desired,a gas port or pas- F. D. Bliss, April 2t, 1877, by Letters Patsagedrilled through the cock-plug in the cencut No. 189,916, and I do notclaim the inventer of its recessed surface, as hereinafter more tiontherein described, my improvements refully described. lating solely to abypass cock, in which the 20 In the accompanying drawings, Figure I isplug is solid and has gaspassages in the form a front elevation of myimproved device; of longitudinal grooves on its surface, and Fig. II, avertical section thereof through the having a central core, whereby twogas-pascenter; and Fig. III, a view of the solid plug, sages are formedon opposite sides ofthe cock, showing one side recessed or drilled out,and one open while the other is closed. in order 7 2 showing also theupper end of the central to more accurately regulate the supply of gascore. V passing through the same.

It has heretofore been the practice to make i Having thus described myinvention, what I the plug hollow, with portions of the surface claim asnew, and desire to secure by Letters cut away, so that when turned bythe handle Patent, is 8o 0 the gas could pass, by means of the cut-out Agas cock or valve adapted to fit a gasportions, through such hollow plugfrom one pipe and regulate the fiowot' gas therein, conside of the pipeto the other. lnstead'of so sisting of a plug recessed on its peripheryto doing, I make the plug solid, and drill out a form a gas port orpassage, A, and crosssemi-sphcrical recess, A, on the externalsurdrilled through such recess to form a second 5 face of the plug, toform a gas port or pasgas port or passage, 0, open when the first issage, or two serni-spherical recesses, A A, on closed, and provided alsowith a central lonopposite sides, so that when the plugisturnedgitudinal opening, D, in combination with a in the pipeB the gas mayflow through the central core, E, fitting in said opening D, and spacethus drilled out from one side of the capable of being moved therein tocover and 9o 0 pipe to the other; and in order to regulate uncover atpleasure said gas-port O wholly with a greater nicety and accuracy theflow of or partially, as may be desired, said device gas, I drill outthe plug in the direction of being constructed and operatingsubstantially its length to the center of the external recess as and forthe purpose set forth. or gaspassage, A, at which point I make a Inwitness whereof I have signed my name 9 .5 cross-drill, G, through theplug to forma secto this specification in the presence of witondgas-passage through the plug when it is so messes. I turned in the pipeas to close the gas-port A. r

In the longitudinal recess D in the plug is in- THOMAS GORDON serted acentral metal core, E, which may be Witnesses:

5o screw-threaded at its upper cnd,to be moved FRANCIS S. BROWN,

by hand or otherwise, and the point thereof HERMAN BECKER.

